Hi CMAQ users and developers:
I was running CCTM with my own input, and it seems that when CTM_PT3DEMIS is set to “N”, the CCTM output is not sensitive to surface emission.
In order to confirm this, I run the benchmark case, with CTM_PT3DEMIS set to “N”. Then, I manually create the surface emission files for benchmark run, with the same gridding, same species, same time flag as benchmark input, but set the emission rate for each grid to zero. So basically, benchmark case, but with no surface emission. The CCTM output shows, the concentrations for all species of benchmark case and benchmark case with no surface emission are exactly equal. In another words, the CCTM does not take the surface emission files into account.
I also tried the benchmark case with CTM_PT3DEMIS set to “Y”, the simulation result shows the concentrations in CCTM output is sensitive to both surface and in-line emissions
All the runs were successful, without error message. My questions are:
- Is there anything particular on the scripts or files that I need to be careful about, in order to prevent from this kind of result?
- Or, did I just compile the CMAQ improperly, so that the emission module neglects the surface emission file, when CTM_PT3DEMIS is set to “N”?
It will be awesome if anyone could take some time to look into this issue. I could email you all the necessary log files, CCTM output files, modified input files, etc, if it helps on solving this case.